Journal of Applied Physiology Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 47: 279-284, 1979;
8750-7587/79 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Muller, N.
Right arrow Articles by Bryan, A. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Muller, N.
Right arrow Articles by Bryan, A. C.

Journal of Applied Physiology, Vol 47, Issue 2 279-284, Copyright © 1979 by American Physiological Society

ARTICLES

Diaphragmatic muscle tone

N. Muller, G. Volgyesi, L. Becker, M. H. Bryan and A. C. Bryan

It is generally believed that there is a scarcity of muscle spindles in the diaphragm and that there is no tonic activity at end expiration. This conclusion is based mainly on animal studies and the difficulty in differentiating tonic electromyogram activity from noise. We have, however, found a number of muscle spindles in the newborn human diagphragm, concentrated in the region of the central tendon. We also tried to detect tonic activity by decreasing it (by rapid-eye movement (REM) sleep or anesthesia) or increasing it (with abdominal loading). During REM sleep in five infants and five adults, using subcostal electrodes were observed a marked fall in tonic activity (P less than 0.001) compared to non-REM or quiet sleep. We also observed a reduction in diaphragmatic tonic activity with halothane anesthesia (P less than 0.001). With esophageal electrodes in adult subjects, there was a rise in tonic diaphragmatic activity proportional to the amount of abdomina load (P less than 0.001). We conclude that there are muscle spindles in the human diaphragm and that there is tonic activity at end expiration.


This article has been cited by other articles:


Home page
 ChestHome page
J. Appelberg, T. Pavlenko, H. Bergman, H. U. Rothen, and G. Hedenstierna
Lung Aeration During Sleep
Chest, January 1, 2007; 131(1): 122 - 129.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Respir. Crit. Care Med.Home page
ATS/ERS Statement on Respiratory Muscle Testing
Am. J. Respir. Crit. Care Med., August 15, 2002; 166(4): 518 - 624.
[Full Text] [PDF]

Home page
 J. Appl. Physiol.Home page
P. A. Easton, M. Katagiri, T. M. Kieser, and R. S. Platt
Postinspiratory activity of costal and crural diaphragm
J Appl Physiol, August 1, 1999; 87(2): 582 - 589.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Respir. Crit. Care Med.Home page
M. I. POLKEY, Y. LUO, R. GULERIA, C.-H. H. ÅRD, M. GREEN, and J. MOXHAM
Functional Magnetic Stimulation of the Abdominal Muscles in Humans
Am. J. Respir. Crit. Care Med., August 1, 1999; 160(2): 513 - 522.
[Abstract] [Full Text]

Home page
 J. Appl. Physiol.Home page
F. Lofaso, A. M. Lorino, R. Fodil, M. P. D'Ortho, D. Isabey, H. Lorino, F. Goldenberg, and A. Harf
Heavy snoring with upper airway resistance syndrome may induce intrinsic positive end-expiratory pressure
J Appl Physiol, September 1, 1998; 85(3): 860 - 866.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online